Detonation rate ammonium perchlorate

Ammonium perchlorate explodes under the impact of a 10-kg weight dropped from a height of 15 cm. According to Kast [15] the rate of detonation of a sample of density 1.17 g/cm3, in an iron pipe 35 mm dia. was 2500 m/sec, the net expansion in the lead block being 220 cm3. 

According to information given in the Encyclopedia [1] the standard propellant made of ammonium perchlorate, PBAN and aluminium can detonate when RDX is added. Thus with 4.75. 7.1 and 9.2% the critical diameters were found to be 28.2. 13.2 and 6.9 cm respectively. No rate of detonation was given. 

Bemecker and Price (26 determined the rates of detonation of mixtures of ammonium perchlorate and wax (Table 126). 

The above figures can give an approximate idea of the rates of detonation of ammonium perchlorate, PBAN and aluminium. 

The growth of the decomposition reactions to burning or detonation has not been studied with the intensity devoted to the initiation of reaction. The speed of the transition and the rate of detonation in azides make detailed studies difficult deflagration has been studied more commonly with slower-burning substances such as ammonium perchlorate. 

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